Emitting Light from Object
The post you linked to is using a translucent shader, you are using a transparent shader.



Transparency vs. Translucency

Transparency simply lets light pass through the object, only changing the color and intensity.  Translucency lets the light through as well, but it scatters the light on the opposite side from which it struck the surface.



Translucency and transparency are the two basic types of transmission, they are akin to diffuse and glossy in terms of reflection.